Operating room ductwork



FIG. 1 is a front elevation of the operating room ductwork of Applicants' invention.

FIG. 2 is a left side elevation of the operating room ductwork of Applicants' invention taken at an angle of 45 degrees relative to the front view of FIG. 1, the right side being a mirror image thereof.

FIG. 3 is a top view of the operating room ductwork of Applicants' invention; and,

FIG. 4 is a bottom view of the operating room ductwork of Applicants' invention.

There is no rear view shown, the same being unornamented and not visible in normal use of the invention. 

What is claimed is the ornamental design for a operating room ductwork, as shown and described. 